Recording device for paper machines



Aprii 24, AS289 lfimfiiifi C. J. GUENTHER RECORDING DEVICE FOR PAPERMACHINES Filed Nov. 2, 1925 5 Sheets-Sheet l A TTORNEYS.

April 24, 1928.

' C. J. GUENTHER RECORDING DEVICE FOR PAPER-MACHINES Filed Nov. 2, 19253 Sheets-e INVENTOR. (mew: JT Gum/mm.

BY M Laws A TTORNEY5.

April 24, 1928.

. C. J. GUENTHER RECORDING DEVICE FOR PAPER MACHINES Filed Nov. 2, 19253 Sheets-Sheet 3 Patented Apr. 24, 1928.

UNITED STATES 1,667,516 PATENT OFFICE.

CHARLES J. GUENTHER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO STICKLE STEAMSPECIALTIES COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION.

RECORDING DEVICE FOR PAPER MACHINES.

Application filed Noveinber 2, 1925. Serial No. 66,300.

This invention is a device for the permanent and continuous recording,in a paper machine, of the condition of the paper relative to moistureand dryness, andthe amount of live steam and exhaust steam beingemployed to heat the rolls and paper and various changes and emergenciesarising in the operation'of the paper machine.

The chief feature of the invention consists in the combination with themechanism in the paper machine, a recording device adapted for making apermanent record of said operations of the machine. In this it isparticularly adapted for use in paper machines wherein the supply ofheat and moisture through the rolls and sheet of paper is controlled bythe sheet of paper, by its tautness due to a relative dry condition, andits slack, due to a relative moist condition. To that end the sheet of.paper controls an auxiliary valve which controls fluid under pressure,such as city water supply, which operates and controls the valvemechanisms for controlling the live steam and also the exhaust steam,and mounting in connection with such control a recording device so as tobe operated thereby, as hereinafter more fully set forth.

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims:

In the drawings, Figure 1 is a side elevation of a portion of the papermaking machine, parts being in section and parts being broken away. Fig.2 is a front elevation of the valve control means for controlling thesupply of live and exhaust steam to the machine, with the recordingdevice attached thereto. Fig. 3 is .a rear elevation of the recordingdevice and a section of said valve control means. Fig. 4 is a centralvertical section on theline 44 of Fig. 3, through the recording device.Fig. 5 is a modified form similar to Fig. 3. Fig. 6 is a perspectiveview of the rock shaft construction with the shaft which operates thepilot valve.

There is shown herein a paper making machine having a frame 10 mountedupon a floor 11 and carrying hollow drying cylinders 12 over which asheet of paper 13 passes through the machine. The sheet of paper .-i'sdried by heat being introduced into the cylinders through pipes 14extending up from a steam header 15 to the cylinders. It

is preferable to use as much exhaust steam as posslble 1n dryin paperbecause it is economical and, there ore, an exhaust pipe 16 leads fromthe engine, not shown, to the header 15, but the exhaust steam supplycannot wholly be relied upon and, therefore, live steam is introducedinto the header 15 through a live steam pipe 17 leading from a riser 18which leads from a horizontal live steam pipe 19 coming from the otherside of the machine, as shown in Fig. 1. There is a return header 20connected with the cylinders by pipes 21 and with a vacuum pump, notshown, for returning the air and water from the drying cylinders.

The supply of exhaust steam is controlled by a valve mechanism 22 andthe live steam supply is controlled by a valve 23 in a bypass pipe 24forming a shunt connection betwen the riser 18 and the pipe 17. There isa shut-off valve 25 in the pipe 17 and a similar valve 26 in the riser18 and a similar valve 27 in the by-pass 24, whereby the live steamcoming through the supply pipe 19 may be prevented from directlyentering the pipe 17 by closing the valve 25 and then letting it passaround through the by-pass 24. Also the steam can be wholly directed, ifdesired, through the pipe 17 by opening the valve 25 and closing thepipe 26. The valve 27 which is operated by hand, enables the capacity ofthe by-pass 24 to be set or regulated.

The valve 22 and the live steam valve 23 are regulated and actuated byconnections with a vertically-moving water piston rod 30 operated in avertical cylinder 31 secured to a vertical plate 32 rigidly mounted. Theupper end of the water piston rod 30 is actuated by a cross head 33operating on vertical guide rods 34, and said piston rod carries at itsupper end a cross rod 35, as shown in Fig. 2. To one end of said crossrod a chain 36 extends down to a valve lever 37 that is fulcrumed at 38in a frame 39. As the piston travels upward, it will tend to close theexhaust valve 22 and as it travels downward, the weight of the lever 37will tend to open said exhaust valve.

The live steam valve is operated by a lever '40 fulcrume'd at 41 on aframe 42, and carrying a weight 43. Gravity acting on the lever and weigt tend to open the live steam valve 23, and its closing movement iscaused by a chain 44 secured to the outer end of the lever 40 andpassing through a sheave wheel on the cross bar 35 operating the pistonrod, and the other end of said chain 44 extends down and is secured toan arm 46 which is adjustably fastened on the cylinder pipe 31.

The piston rod 30 in the cylinder 31 is actuated and controlled by fluidunder pressure, usually water from a city water system that comes inthrough a city water pipe 50 and up through a riser pipe 51 and a pipe52 leads from the pipe 51 to the lower end of the cylinder 31, and thereis a shut-off valve 53 in the pipe 51 to the right hand or be yond thepipe 52. The water pressure in the pipe 51 is controlled by a pilotvalve '55 which has an upwardly-extending valve stem 56 operating in aframe 57 secured to the frame of the machine near the end of thecylinder over which the sheetof paper 13 passes. Said valve is operatedand controlled by an arm 58 secured to a shaft 59 that extends entirelyacross the machine and has secured on each end an arm 60 that ispivotally connected by a vertical rod 61 pivoted to a vertical arm 62which is secured to a rock shaft 63 mounted on a frame 64 and extendingacross the machine, substantially as indicated in Fig. 6. The shaft 50at each end has secured on it an arm 65 extending downwardly at aninclination, as shown in Fig. 1, and each arm carries on its end a roll66 adapted to engage the sheet of paper 13. The lever 58 iscounterbalanced by a weighted arm 67.

The mechanism just described provides for automatic steam control by thetension of the sheet of paper through an auxiliary pilot valve. Themeans for controlling the supply of steam to the paper drying cylindersis substantially of the same nature as that set forth in the patentgranted to Cole Stickle, on October 9, 1917, No. 1,242,387, for heatcontrol for paper making machines, and the operation of the mechanismheretofore described is as follows: Vhen the sheet. of paper 13 draws upslightly by drying, it opens the auxiliary pilot valve 55 which admitsthe auxiliary city water pressure through pipes 51 and 52 tothe bottomof the cylinder 31, which forces the piston rod 30 upward. The upwardmovement of the piston closes the live steam valve 23 by the chain 44connected to the lever 40 or weight 43, if desired. When the sheet ofpaper becomes slack by reason of'moisture, the opposite action will takeplace so that the live steam valve would be open, should the machinerequire a constant make-up of live steam. The auxiliary or pilot valve55 would more to open and closed positions with the change of themoisture condition of the sheet of paper, whereby it is rendered moretaut by drying or slack by moisture, and thus said auxiliary or pilotvalve would automatically admit live steam and shut it off, as thedrying sheet requires. The exhaust steam valve is set so that it doesnot close when the live steam valve closes, but should the exhaust steamsuflice to dry the sheet of paper, as the sheet becomes dry and moretaut, the piston rod 30 would travel up and close the live steam valve.Should the sheet require less exhaust steam, the piston rod 30 willcontinue to travel upward and will partially close the exhaust valve 22and would travel up or down as the condition of the paper causes it totravel and thus admit more or less steam as might be required to dry thesheet.

When the auxiliary or pilot valve 55 closes, the auxiliary pressureleaks away, allowing the piston rod 30-to move downward. Then theauxiliary or pilot valve 55 opens again, it builds up the pressurebeneath the piston in the cylinder 31 and the piston rod travels upwardagain. This enables a sheet of paper to be dried evenly by automaticcontrol that varies the steam in the cylinders according to the slightvariation that comes from free to hard drying stock. The back tendernever knows when this change is coming and consequently the sheet ofpaper gets either too dry or too damp unless the machine be equippedwith an automatic heat control. With this steam control one can get anevenly dried sheet of paper because the control is mechanical andautomatic.

A permanent record of the tension of the sheet of paper as it goesthrough the machine, and, therefore, its condition from time to time, ismade by combining with the foregoing mechanism, Which will hereafter beexplained. This recorder also shows to what extent live steam isemployed and exhaust steam for drying the sheet of paper, from time totime, during the operation of the machine for twenty-four hours, and bythat record the operator of the machine is enabled to adjust the machineso it will operate more satisfactorily and smoothly and use as littlelive steam as possible and depend as much as possible upon the exhauststeam. The record will also shoW any accidental or emergency conditionsof the sheet of paper or operation of the machine, as will be explained.

On the cylinder tube 31, as shown in Fig. 2, a cylindrical casing 70 issecured by clamps 71, so that the same will be visible. The casing, asshown in Fig. 4, has a glass front 72, and in said casing there issecured a clock 73 by a clamping ring 74 secured to the frame arm 75, asseen in Fig. 3. The details of this clock are not shown, but it is aspring clock of usual type and has a shaft 76 extending centrallythrough it which is operated by the clock mechanism and which carries onone end a rotating dial chart 77, as seen in Fig. 2. This chart liestends to a long immediately behind the glass front 72 and it rotatesslowly, making one revolution in twenty-four hours, and it hasjthe hoursfrom noon to midnight and from midnight to noon marked on the marginthereof, and it also has what may be termed a normal line markedthereon.

A pen holder 81 extends up in front of the chart and to one side of thecenter substantially as shown in Fig. 6, so that the upper end wouldnormally register with said normal line 80 and in its upper end itcarries a pen 82. The penholder 81 is at its lower end secured toa shaft83 mounted in a bearing sleeve 84 on an arm 85 extending downward fromthe clamping ring 74 that holds the clock. As the ring is oscillated, ittravels. and marks on the chart lines almost radial in direction, acrossthe normal line 80.

The recording pen is actuated and controlled by the following means: Acord or chain 86 is secured at its upper end to the cross rod 35 and atits lower end said cord 86 extends several times around a pulley 87 on ashaft 88 mounted concentrically of the clock and in alignment with theclock shaft 76, but independently thereof. The outer end of the shaft 88is mounted in a bearing 89 and has secured on its outer end a pinion 90that meshes with a spur gear 91 below it which .is mounted in a framearm 92 and eccentrically pivoted to the spur gear 91 there is a link93-, as seen. in Fig. 3, that exarm 94 which is secured to the shaft 83,shown by dotted lines in Fig. 4, that operates in the bearing 84. Whenthe piston rod goes up, therefore, the pulley 87 will be turnedcounterclockwise for moving the pen 82 in one direction and when thepiston rod goes down, a spring 110 associated with the frame of theclock and the pulley 87 returns said pulley and gives it aclockwisemovement which enables the cord 86 to be taut and moves the pen 82 inthe opposite direction.

A modified means is shown in Fig. 5 for operating the pen, the onlychange being that instead of the pinio71 90 there is a worm pinion thatmeshes with the worm wheel 101 which are mounted on an arm 102 from theframe member 74 and the connecting bar 93 is eccentrically pivoted tothe worm gear 101 by a connection 103.

The operation of the recording device is as follows: As the sheet ofpaper 13 becomes drier and more taut, and the piston rod 30 moves upwardas heretofore explained, it will turn the pulley 87 counterclockwiseand, therefore, move the pen radially of the chart towards the center ofthe chart and when the sheet is relatively moist and slack, the pistonrod 30 will move downward correspondingly and the pen will be caused tomove across the dial in the opposite direction, that is, away from thecenter! of the chart- Hence, as the machine operates, the pen willoscillate more or less in one direction and near the normal line 80 asthe dial is slowly'rotated by the clock. The parts .moist conditionsfrom time to time.

The recording device also indicates the steam supply for heating thecylinders. The recording lines 105 that extend outward from the normalline 80, indicate-that live steam is used in addition to exhaust steam,and the further out the lines extend, the more live steam is being usedwhich is an undesirable condition from the standpoint of economy. Therecording lines 105 extending inward from the normal line 80 indi-- Icate that exhaust steam only is being used to dry thepaper and thefurther inward the lines extend, the less exhaust steam is being used.The idle condition of the paper and of the steam control is indicated byslight variation of the pen marks from the normal line 80, preferably onthe inside of said line. When, however, there is a wash up, a widesweep-ing movement of the recording pen produces longtransverse lines,as at 106, and the same result happens when they are bringing the paperover or if the sheet of paper should break.

Hence, this recording device not only records the condition, tension anddryness or moistness of the sheet of paper, but it also indicates whenlive steam .is being used and to what degree and also to what-extentexhaust steam is being used; and it also indicates, as stated above,when the sheet of paper breaks or there is a wash up or paper is'beingbrought over the cylinder, or any emergency or accidental condition.

The invention claimed is:

1. In a paper making machine having means controlled by the tautness ofthe sheet of paper for controlling the heat in drying the same as itpasses through the machine, and a recording device, a connection betweensaid heat controlling means and recording device for operating therecording device whereby it will record and indicate the tautness of thesheet of paper during its manufacture.

2. In a paper making machine having means controlled by the tautness ofthe sheet of paper for controlling the heat for drying the same as itpasses through the machine and a clock-operated recording de vice havinga time chart and a pen for making the same, a flexible connectionattached at one end and movable by said heat controlling means and theother end thereof operatively connected with said pen for operating thesame.

3. Apparatus substantially as set forth in H) claim 2, said connectionbetween the heat turning it in one direction, a spring for returning thepulley, and means operated by said pulley for operating the pen.

In Witness whereof, I have hereunto affixed my signature.

CHARLES J. GUENTHER.

